GB2513929A - Distance Measuring Alert Sensor for Vehicle - Google Patents
Distance Measuring Alert Sensor for Vehicle Download PDFInfo
- Publication number
- GB2513929A GB2513929A GB1314144.5A GB201314144A GB2513929A GB 2513929 A GB2513929 A GB 2513929A GB 201314144 A GB201314144 A GB 201314144A GB 2513929 A GB2513929 A GB 2513929A
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- United Kingdom
- Prior art keywords
- controller
- ultrasound
- vehicle
- input terminal
- alert
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/86—Combinations of radar systems with non-radar systems, e.g. sonar, direction finder
- G01S13/862—Combination of radar systems with sonar systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9315—Monitoring blind spots
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9327—Sensor installation details
- G01S2013/93274—Sensor installation details on the side of the vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2015/937—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details
- G01S2015/938—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details in the bumper area
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Emergency Alarm Devices (AREA)
- Radar Systems Or Details Thereof (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
A distance measuring sensor for mounting on a vehicle has an ultrasound sensing unit 21, a microwave sensing unit 22, a controller 24 and an alarm 23. If the controller receives a sensing signal from either the ultrasound unit or the microwave unit, the controller outputs an alarm signal to alert the driver. The microwave unit detects objects in the long range and the ultrasonic unit detects objects in the close range; if a sensing signal is generated by both units then the distance measured by both units may be compared and the lesser value taken to be the distance to the object. The ultrasound unit may be a plurality of transducers 210 operated sequentially. The controller may be connected to the vehicles central locking system 30 in order to prevent a door being opened if an object is detected moving at a speed equal to or above a predetermined safe speed relative to the vehicle.
Description
DISTANCE NIEASURINGALERT SENSOR FOR VEI1ICLE
* Field of the Invention
The present invention relates to a distance measuring alert sensor and more particularly to a distance measuring alert sensor for a vehicle.
2. Description of the Relitted Art
Vehicles are convenient means of transportation, and almost every vehicle has a distance measuring alert sensor nowadays. A conventional distance measuring alert sensor has at least one ultrasound sensor, an alarm and a controller.
The at least one ultrasound sensor is adapted for being mounted on a rear of a vehicle, wherein the at least one ultrasound sensor enñts a ultrasound sensing signal having a fixed frequency (4OKHz6OKHz), and when the ultrasoimd sensing signal hits an external object (such as a pedestrian or another vehicle), the ultrasound sensing signal reflects and forms an echo signal.
The alarm is adapted for being mounted on a driver seat of a vehicle.
The controller is electrically connected to the at least one ultrasound sensor and the alarm, and has a built-in safe distance, wherein the controller obtains a distance between a vehicle having the distance measuring alert sensor and an external object hit by the ultrasound sensing signal based on a time difference between the ultrasound sensing signal and the echo signal. When the distance is shorter than the safe distance, which means the vehicle is too close to the external object and reversing the vehicle may cause a car accident, the controller drives the alarm to produce an alert to warn the driver to be aware of a road condition behind the vehicle to avoid a car accident.
However, an ultrasound sensor is a close range sensor. Ultrasonic energy declines when passing through air, thus, a sensor range of the ultrasound sensor is usually shorter than 2 meters. When an external object is located out of the sensor range, the ultrasound sensor is not able to sense the external object. Therefore, when the external object suddenly falls into the sensor range, the controller suddenly drives the alarm to produce the alert. If the driver cannot react to the alert timely enough, the vehicle may hit the external object and cause a car accident.
The main external objective of the invention is to provide a distance measuring alert sensor to overcome a defect of the short sensor range of the conventional distance measuring alert sensor.
The distance measuring alert sensor is adapted for being mounted on a vehicle to sense external objects and comprises an ultrasound sensing unit, a microwave sensing unit, an alarm and a controller.
The ultrasound sensing unit has at least one ultrasound sensor, wherein when the at least one ultrasound sensor senses an external object, the at least one ultrasound sensor generates an ultrasound sensing signal.
When the microwave sensing unit senses the external object, the microwave sensing unit generates a microwave sensing signal.
The controller is electrically connected to the ultrasound sensing unit, the microwave sensing unit and the alarm, wherein when the controller receives a sensing signal from either the ultrasound sensing unit or the microwave sensing unit, the controller drives the alarm to produce an alert.
Generally, an effective range of the microwave is longer than the effective range of the ultrasound, and the distance measuring alert sensor in accordance with the present invention has both the Ldtrasound sensing unit and the microwave sensing unit, thus, the ultrasound sensing unit is used for sensing external objects near the vehicle and the microwave sensing unit is used for sensing external objects far from the vehicle.
Therefore, the driver can recognize external objects in both the close and the long ranges to ensure a driving safety.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
In the drawings: Fig. 1 is a circuit block diagram of a preferred embodiment of a distance measuring alert sensor in accordance with the present invention; Fig. 2 is an operational top view of the distance measuring alert sensor in Fig. I, shown applied on a vehicle; Figs. 3A to 3G are the circuit diagram of the distance measuring alert sensor in Fig. I; Fig. 4 is a circuit block diagram of a microwave sensing unit of a distance measuring alert sensor in accordance with the present invention; and Fig. 5 is a flow chart showing a controller of a distance measuring alert sensor in accordance with the present invention controlling a central lock system of a vehicle.
In a preferred embodiment of a distance measuring alert sensor in accordance with tile present invention as shown in Figs. 1, 2 and 3A to 3G, tile distance measuring alert sensor is adapted for being mounted on a vehicle 10 and comprises an ultrasound sensing unit 21, a microwave sensing unit 22, an alarm 23, a controller 24 mid a power unit 25 electrically connected to the ultrasound sensing unit 21, the microwave sensing unit 22, the alarm 23 and the controller 24 to provide an operating voltage.
The ultrasound sensing unit 21 has at least one ultrasound sensor 210 mounted on a rear of the vehicle 10 to sense an external object behind the vehicle 10 such as a pedestrian or another vehicle. The at least one ultrasound sensor 210 generates an ultrasound signal to the external environment. When the ultrasound signal hits the external object, the ultrasound signal reflects and forms an echo signal. The at least one ultrasound sensor 210 senses the echo signal and obtains an ulirasound sensing signal based on a time difference between the ultrasound sensing signal and the echo signal, and a wave velocity of an ultrasoimd. The ultrasound sensing signal represents a distance between the external object and the vehide 10. In a preferred embodiment, the ultrasound sensing unit 21 has multiple ultrasound sensors 210.
The microwave sensing unit 22 is adapted for being mounted on a rearview mirror of the vehicle 10 to sense the external object behind the vehicle 10. The microwave sensing unit 22 generates a microwave sensing signal based on a position of the external object. The microwave sensing signal also represents the distance between the external object and the vehicle 10.
The alarm 23 is a buzzer, a horn, an indicator light or a monitor adapted for being mounted on a driver seat of the vehicle 10.
The controller 24 has multiple input terminals and multiple output terminals. The input terminals are respectively and electrically connected to the ultrasound sensing unit 21 and the microwave sensing Lmit 22, and the output terminals are electncally connected to the alarm 23.When the controller 24 receives a sensing signal from either the ultrasound sensing unit 21 OT the microwave sensing unit 22, the controller 24 drives the alarm 23 to produce an alert. In a preferred embodiment, the controller 24 has a built-in safe distance and a built-in safe speed. The controller 24 obtains the distance between the external object and the vehicle 10 based on the ultrasound sensing signal and the microwave sensing signal, and compares the ultrasound sensing signal with the microwave sensing signal to obtain a minimum value. The minimum value is regarded as a sensed distance. When the controfler 24 determines that the sensed distance equals or is shorter than the safe distance, the controller 24 drives the alarm 23 to produce the alert. In addition, when no external object is located near the vehicle 10 but an external object is located far from the vehicle 10, the controller 24 only receives the microwave sensing signal and does not receive the ultrasound sensing signal, the controller 24 still drives the alarm 23 to produce the alert. In addition, when the ultrasound sensing unit 21 has muhiple ultrasound sensors 210, the ultrasound sensors 210 sequentiffily generate ultrasound sensing signals, and the controller 24 sequentially drives the ultrasound sensors 210 to sequentially receive the ultrasound sensing signals.
The ultrasound sensing unit 21 is a close range sensing unit having an effective range around 2 meters, and the microwave sensing unit 22 is a long range sensing unit having an effective range over 2 meters. The driver can recognize a road condition behind the vehicle 10 in both close and long ranges by the ultrasound sensing wilt 21 and the microwave sensing unit 22. Taking reversing for example, when the driver reverses and a pedestrian or another vehicle is behind the vehicle 10, the controller 24 drives the alarm 23 to produce the alert to warn the driver to be aware of a road condition behind the vehicle 10 to ensure a driving safety.
With reference to Fig. 4, a detailed connection between the microwave sensing unit 22 and the controller 24 is shown. The controller 24 comprises a first output terminal, a second output terminal and an input terminal. The microwave sensing unit 22 comprises a pulse generator 221, an RE oscillator 222, a transceiver switch 223, an antenna 224, a Doppler corrector 225 and a wave detector 226. In a preferred embodiment, the microwave sensing unit 22 fttrther comprises a waveform processor 227.
The pulse generator 221 has an input terminal and an output terminal, wherein the input terminal of the pulse generator 221 is electrically connected to the first output terminal of the controller 24. The RF oscillator 222 has an input terminal, a first output terminal and a second output terminal, wherein the input terminal of the RF oscillator 222 is electrically connected to the output terminal of the pulse generator 221. The transceiver switch 223 has an input terminal, a transceiver terminal and an output terminal, wherein the input terminal of the transceiver switch 223 is electrically connected to the first output terminal of the RF oscillator 222. The antenna 224 is electrically connected to the transceiver terminal of the transceiver switch 223. The Doppler corrector 225 has a first input terminal, a second input terminal and an output terminal, wherein the first input terminal of the Doppler corrector 225 is electrically comiected to the second output terminal of the controller 24, and the second input terminal of the Doppler corrector 225 is &ectric&ly connected to the second output terminal of the RF oscillator 222. The wave detector 226 has a first input terminal, a second input terminal mid an output terminal, wherein the first input teniiinal of the wave detector 226 is electrically connected to the output terminal of the transceiver switch 223, and the second input terminal of the wave detector 226 is electrically connected to the output terminal of the Doppler corrector 225. The waveform processor 227 has an input terminal and an output terminal, wherein the input terminal of the waveform processor 227 is electrically connected to the output terminal of the wave detector 226, and the output terminifi of the waveform processor 227 is &ectrically connected to the input terminal of the controller 24.
The controller 24 drives the pulse generator 221 and the RF oscillator 222 to generate a microwave signal. The transceiver switch 223 receives the microwave signal from the RF oscillator 222 and radiates an electromagnetic wave based on the microwave signal to the external environment by the antenna 224. When the RF oscillator 222 generates the microwave signal, the Doppler corrector 225 also receives the microwave signal from the RF oscillator 222 and produces a reference voltage Vk based on the microwave signal, wherein Vk=UkCOS(wot+)). When the electromagnetic wave hits an external object and reflects, the antenna 224 senses the reflected electromagnetic wave and produces a sensing voltage Vr, wherein VrUrCOS(Wo(t1r)+o) and tr is a round-trip time of the electromagnetic wave between tile antenna 224 and the external object.
The wave detector 226 receives the reference voltage Vk and the sensing voltage V respectively from the transceiver switch 223 and the Doppler corrector 225. The wave detector 226 obtains the above-mentioned microwave sensing signal V based on the reference voltage Vk and the sensing voltage Vr, wherein V=Vo(l+rnCOS) m=Vr/Vk and is a phase difference between the reference voltage Vk and the sensing voltage V. When the distance between a vehicie and the external object remains unchanged, the phase difference 0 is a constant, which means 0=w0 tr=wo[2(Do)/c], wherein D0 is the distance between the vehide and the external object. When D0 gradually increases, the externa' object is moving gradually away from the vehicle.
When Dc gradually decreases, the external object is gradually approaching the vehicle.
When the distance between the vehicle and the external object changes over time, the phase difference 0 also changes over time, which means 0=wot1=wo[2(Do-01t)/c], wherein Or is a r&ative speed between the vehicle and the external object.
The waveforni processor 227 receives the niicrowave sensing signal V from the wave detector 226. The microwave sensing signal V is amplified, filtered and sent to the controller 24. The controller 24 determines that the external object is approaching or moving away froni the vehicle, and also determines the distance D0 and the relative speed Or between the vehicle and the external object based on the microwave sensing signal V. When the controfler 24 determines that the relative speed is higher than the above-nientioned safe speed, which nieans the external object approaches the vehicle at a high speed, and the controller 24 drives the alarm 23 to produce the alert to warn the driver to be vigilant.
With reference to Fig. 5, tile controller 24 of a distance measuring alert sensor iii accordance with the present invention can be further electrically connected to a central lock system 30 of a vehicle. The controller 24 determines whether a car door handie is pulled (101). When the car door handle is pulled, which means the driver or a passenger is to get off the vehicle, the controller 24 determines whether a distance D0 between the vehicle and an external object is shorter than the above-mentioned safe distance D, (102). When Do<Dth, which means the external object is too close to the vehicle, the controller 24 drives the alarm 23 to produce the alert (103), and controls the central lock system 30 to lock the car door (104). When D0>D, the controller 24 determines whether the relative speed Or is higher than the above-mentioned safe speed °th based on the phase difference (105). When Or>Ofll, which means the external object approaches the vehicle at a high speed, the controller 24 drives the alanii 23 to produce the alert(103), and controls the central lock system 30 to lock the car door(104). When Or<OtlI, which means a road condition behind the vehicle is safe, the controller 24 controls the central lock system 30 to unlock the car door (106) to allow the driver or the passenger to open the car door and get off the vehicle.
In the step of the controller determining whether the car door is pulled (101), when the car door is not pulled, which means the vehicle is probably still moving, in order to ensure the safety, the controller still determines whether the distance D0 between the vehicle and the external object is shorter than the safe distance D11, (107), when D0<D1, the controller 24 directly controls the central lock system 30 to lock the car door (104).
When D0>D11, the controller 24 further determines whether tile relative speed Or is higher than the safe speed °th (108). When Or>Oth, the controller 24 directly controls the central lock system 30 to lock the car door (104). When Or<Oth, the controfler 24 resumes step (101).
in conclusion, when a driver or a passenger is to get off a vehicle having a distance measuring alert sensor in accordance with the present invention, if an externa' object such as another vehicle or a motorcycle approaches the vehicle, the controller 24 controls the central thck system 30 to lock the car door of the vehicle, such that the driver or the passenger is not able to open the car door. Therefore, the driver or the passenger will not be hit by another vehicle or the motorcycle when opening the car door and can further avoid a car accident.
Claims (9)
- CLAIMS: 1. A distance measuring alert sensor adapted for being mounted on a vehicle, the alert sensor comprising: an ultrasound sensing unit (21) having at least one ultrasound sensor (210), wherein when the at least one ultrasound sensor (210) senses an external object, the at least one ultrasound sensor (210) generates an ultrasound sensing signal; a microwave sensing unit (22), wherein when the microwave sensing unit (22) senses the external object, the microwave sensing unit (22) generates a microwave sensing signal; an alarm (23); and a controller (24) electrically connected to the ultrasound sensing unit (21), the microwave sensing unit (22) and the alarm (23), wherein when the controller (24) receives a sensing signal from either the ultrasound sensing unit (21) or the microwave sensing unit (22), the controller (24) drives the alarm (23) to produce an alert.
- 2. The distance measuring alert sensor as claimed in claim I, wherein the ultrasound sensing signal represents a distance between the external object and the vehicle; the microwave sensing signal also represents the distance between the extertial object and the vehicle; the controller (24) obtains the distance between the external object and the vehicle based on the ultrasound sensing signal and the microwave sensing signal, and compares the ultrasound sensing signal with the microwave sensing signal to obtain a minimum value, wherein the minimum value is regarded as a sensed distance; when the controller (24) determines that the sensed distance equals or is shorter than a safe distance, the controller (24) drives the alarm (23) to produce the alert; when the controller (24) oniy receives the microwave sensing signal without receiving the ultrasound sensing signal, the controller (24) drives the alarm (23) to produce the alert.
- 3. The distance measuring alert sensor as claimed in claim 2, wherein the ultrasound sensing unit (21) has multiple ultrasound sensors (210), the ultrasound sensors (210) sequentially generate ultrasound sensing signals, the controller (24) sequentially drives the ultrasound sensors (210) to sequentially receive the ultrasound sensing signals.
- 4. The distance measuring alert sensor as claimed in any claim of claims 1 to 3, wherein the microwave sensing unit (22) comprises: a pulse generator (221) having an input terminal and an output terminal, wherein the input terminal of the pulse generator (221) is electrically comiected to the controller (24); an RF oscillator (222) having an input terminal, a first output terminal and a second output terminal, wherein the input terminal of the RF oscillator (222) is electrically connected to the output terminal of the pulse generator (221); a transceiver switch (223) having an input terminal, a transceiver terminal and an output terminal, wherein the input terminal of the transceiver switch (223) is electrically connected to the first output terminal of the RF oscillator (222); an antenna (224) electrically connected to the transceiver terminal of the transceiver switch (223); a Doppler corrector (225) having a first input terminal, a second input terminal and an output terminal, wherein the first input terminal of the Doppler corrector (225) is electrically connected to the controller (24), and the second input terminal of the Doppler corrector (225) is electrically connected to the second output terminal of the RF oscillator (222); a wave detector (226) having a first input terminal, a second input terminal and an output terminal, wherein the first input terminal of the wave detector (226) is electrically connected to the output terminal of the transceiver switch (223) to receive a sensing voltage, the second input terminal of the wave detector (226) is electrically connected to the output terminal of the Doppler corrector (225) to receive a reference voltage, and the output terminal of the wave detector (226) is electrically connected to the controller (24); and wherein the controller (24) receives the sensing voltage and the reference voltage from the wave detector (226), and obtains the microwave sensing signal based on a phase difference between the sensing voltage and the reference voltage.
- 5. The distance measuring alert sensor as claimed in claim 4, wherein the output terminal of the wave detector (226) is electrically connected to the controller (24) through a waveform processor (227).
- 6. The distance measuring alert sensor as claimed in any claim of claims 1 to 3, wherein the controller (24) is further electrically connected to a central lock system (30) of the vehicle, and controls the central lock system (30) to lock a car door of the vehicle according to the microwave sensing signal.
- 7. The distance measuring alert sensor as claimed in claim 6, wherein tile controller (24) obtains a relative speed between the vehicle and the external object based on the microwave sensing signal, and when the relative speed equals or is higher than a safe speed, the controller (24) controls the central lock system (30) to lock the car door.
- 8. The distance measuring alert sensor as claimed in claim 4, wherein the controller (24) is further electrically coirnected to a central lock system (30) of the vehicle and obtains a relative speed between the vehicle and the external object based on a phase difference between the sensing voltage and the reference voltage, and when the relative speed equals or is higher than a safe speed, the controller (24) controls the central lock system (30) to lock a car door of the vehicle.
- 9. The distance measuring alert sensor as claimed in claim 8, wherein the controller (24) further determines whether a car door handle of the car door is pulled, and when the car door is pulled and the relative speed equals or is higher than the safe speed, the controller (24) drives the alarm (23) to produce the alert.Amendment to the claims have been filed as follows In the claims: 1. A distance measuring alert sensor adapted for being mounted on a vehicle, the alert sensor compnsing: an ultrasound sensing unit (21) having at least one ultrasound sensor (210), wherein when the at least one ultrasound sensor (210) senses an external object, the at least one ultrasound sensor (210) generates an ultrasound sensing signal; a microwave sensing unit (22) comprising a pulse generator (221) having an input terminal and an output terminal; an RF oscillator (222) having an input terminal, a first output terminal and a second output terminal, wherein the input terminal of the RF oscillator (222) is electrically connected to the output terminal of the pulse generator (221); a transceiver switch (223) having an input terminal, a transceiver terminal and an output terminal, wherein the input terminal of the transceiver switch (223) is (0 electrically connected to the first output terminal of the 1ff oscillator (222); an antenna (224) electrically connected to the transceiver terminal of the transceiver switch (223); a Doppler corrector (225) having a first input terminal, a second input terminal and an output terminal, wherein the second input terminal of the Doppler corrector (225) is electrically connected to the secoild output terminal of the RF oscillator (222); and a wave detector (226) having a first input terminal, a second input terminal and an output terminal, wherein the first input terminal of the wave detector (226) is electrically connected to the output terminal of the transceiver switch (223) to receive a sensing voltage, the second input terminal of the wave detector (226) is electrically connected to the output tenninal of the Doppler corrector (225) to receive a reference voltage; an alarm (23); and a controller (24) electrically connected to the ultrasound sensing unit (21), the input terminal of the pulse generator (221), the first input terminal of the Doppler corrector (225), the output tenninal of the wave detector (226) of the microwave sensing unit (22) and the alarm (23), wherein when the controller (24) receives a sensing signal from either the ultrasound sensing unit (21) or the microwave sensing unit (22), the controller (24) drives the alann (23) to produce an alert, wherein the controller (24) receives the sensing voltage and the reference voltage ftom the wave detector (226), and obtains a microwave sensing signal based on a phase difference between the sensing voltage and the reference voltage.2. The distance measuring alert sensor as claimed in claim t, wherein the (C) ultrasound sensing signal represents a distance between the external object and the vehicle; the microwave sensing signal also represents the distance between the external object and the vehicle; the controller (24) obtains the distance between the external object and the vehicle based on the ultrasound sensing signal and the microwave sensing signal, and compares the ultrasound sensing signal with the microwave sensing signal to obtain a minimum value, wherein the minimum value is regarded as a sensed distance; when the controller (24) determines that the sensed distance equals or is shorter than a safe distance, the controller (24) drives die alann (23) to produce the alert; when the controller (24) only receives the microwave sensing signal without receiving the ultrasound sensing signal, the controller (24) dnves the alann (23) to produce the alert.3. The distance measuring alert sensor as claimed in claim 2, wherein the ultrasound sensing unit (21) has multiple ultrasound sensors (210), the ultrasound sensors (210) sequentially generate ultrasound sensing signals, the controller (24) sequentially drives the ultrasound sensors (210) to sequentially receive the ultrasound sensing signals.4. The distance measuring alert sensor as claimed in any claim of claims 1 to 3, wherein the output tenninal of the wave detector (226) is electrically connected to the controller (24) through a waveform processor (227).5. The distance measuring alert sensor as claimed in any claim of claims 1 to 3, wherein the controller (24) is further electrically connected to a central lock system Z1 (30) of the vehicle, and controls the central lock system (30) to lock a car door of the vehicle according to the microwave sensing signal.6. The distance measuring alert sensor as claimed in claim 5, wherein the (C) controller (24) obtains a relative speed between the vehicle and the external object based on the microwave sensing signal, and when the relative speed equals or is higher than a safe speed, the controller (24) controls the central lock system (30) to lock the car door.7. The distance measuring alert sensor as claimed in claim 6, wherein the controller (24) is further electrically connected to a central lock system (30) of the vehicle and obtains a relative speed between the vehicle and the external object based on the phase difference between the sensing voltage and the reference voltage, and when the relative speed equals or is higher than a safe speed, the controller (24) controls the central lock system (30) to lock a car door of the vehicle.8. The distance measuring alert sensor as claimed in claim 7, wherein time controller (24) further detennines whether a car door handle of the car door is pulled, and when the car door is pulled and the relative speed equals or is higher than the safe speed, the controller (24) drives the alarm (23) to produce the alert. (0 r
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310169275.3A CN104139730A (en) | 2013-05-09 | 2013-05-09 | Vehicle ranging warning device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201314144D0 GB201314144D0 (en) | 2013-09-18 |
| GB2513929A true GB2513929A (en) | 2014-11-12 |
| GB2513929B GB2513929B (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB201314144A Expired - Fee Related GB2513929B (en) | 2013-05-09 | 2013-08-07 | Distance Measuring Alert Sensor for Vehicle |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104139730A (en) |
| GB (1) | GB2513929B (en) |
| TW (1) | TW201442904A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104986104A (en) * | 2015-06-24 | 2015-10-21 | 奇瑞汽车股份有限公司 | Vehicle door opening anti-collision warning system and vehicle door opening anti-collision warning method |
| CN108696796A (en) * | 2017-04-11 | 2018-10-23 | 福特全球技术公司 | Vehicle acoustical warning system based on existing sensor(AVAS)Diagnosis |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104502936B (en) * | 2014-11-24 | 2017-05-10 | 福建爱特点信息科技有限公司 | High-precision positioning and navigation system |
| CN105691396B (en) * | 2016-04-12 | 2019-01-29 | 京东方科技集团股份有限公司 | Automobile safety system and method |
| CN108868388A (en) * | 2018-06-18 | 2018-11-23 | 宁波市鄞州智伴信息科技有限公司 | Vehicle safety early warning system |
| CN109655818B (en) * | 2018-12-24 | 2024-02-06 | 苏州市建筑科学研究院集团股份有限公司 | Ranging method by using radio frequency ranging device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202499102U (en) * | 2012-01-16 | 2012-10-24 | 深圳职业技术学院 | Intelligent alarm device for vehicle lane changing |
| CN202806551U (en) * | 2012-10-27 | 2013-03-20 | 徐咪 | Automobile door collision-prevention device |
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2013
- 2013-05-09 CN CN201310169275.3A patent/CN104139730A/en active Pending
- 2013-06-24 TW TW102122299A patent/TW201442904A/en unknown
- 2013-08-07 GB GB201314144A patent/GB2513929B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| US4674073A (en) * | 1985-02-28 | 1987-06-16 | Aisin Seiki Kabushiki Kaisha | Reflective object detecting apparatus |
| JPH05116622A (en) * | 1991-10-29 | 1993-05-14 | Nissan Motor Co Ltd | Approach alarming device |
| US5754123A (en) * | 1996-05-06 | 1998-05-19 | Ford Motor Company | Hybrid ultrasonic and radar based backup aid |
| EP0952460A2 (en) * | 1998-04-20 | 1999-10-27 | Matsushita Electric Works, Ltd. | Obstacle detection system for a vehicle |
| US6580385B1 (en) * | 1999-05-26 | 2003-06-17 | Robert Bosch Gmbh | Object detection system |
| WO2003029045A2 (en) * | 2001-10-03 | 2003-04-10 | Sense Technologies, Inc. | Multi-technology object detection system and method |
| US20080266052A1 (en) * | 2005-03-03 | 2008-10-30 | Roland Schmid | Distance Measuring Device and Method for Testing the Operation of a Distance Measuring System |
| US20090254260A1 (en) * | 2008-04-07 | 2009-10-08 | Axel Nix | Full speed range adaptive cruise control system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104986104A (en) * | 2015-06-24 | 2015-10-21 | 奇瑞汽车股份有限公司 | Vehicle door opening anti-collision warning system and vehicle door opening anti-collision warning method |
| CN108696796A (en) * | 2017-04-11 | 2018-10-23 | 福特全球技术公司 | Vehicle acoustical warning system based on existing sensor(AVAS)Diagnosis |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2513929B (en) | 2015-04-29 |
| TW201442904A (en) | 2014-11-16 |
| GB201314144D0 (en) | 2013-09-18 |
| CN104139730A (en) | 2014-11-12 |
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| Date | Code | Title | Description |
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| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20170807 |